標題: | A 40-MHz double differential-pair CMOS OTA with-60-dB IM3 |
作者: | Lo, Tien-Yu Hung, Chung-Chih 電信工程研究所 Institute of Communications Engineering |
關鍵字: | operational transconductance amplifier (OTA);pseudodifferential structure;short channel effect;source degeneration |
公開日期: | 1-二月-2008 |
摘要: | A configuration of a linearized operational transconductance amplifier (OTA) for low-voltage and high-frequency applications is proposed. By using double pseudodifferential pairs and the source-degeneration structure under nano-scale CMOS technology, the norlinearity caused by short channel effect from a small feature size can be minimized. A robust common-mode control system is designed for input and output common-mode stability and thus reduces distortion caused by common-mode voltage variation. Mining ability can be achieved by using MOS transistors in the linear region. The linearity of the OTA is about -60-dB third-order inter-modulation (IM3) distortion for up to 0.9 V-pp at 40 MHz. This OTA was fabricated by the TSMC 180-nm deep n-well CMOS process. It occupies a small area of 15.1 X 10(-3) mm(2) and the power consumption is 9.5 mW under a 1.5-V supply voltage. |
URI: | http://dx.doi.org/10.1109/TCSI.2007.910747 http://hdl.handle.net/11536/9693 |
ISSN: | 1549-8328 |
DOI: | 10.1109/TCSI.2007.910747 |
期刊: | IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS |
Volume: | 55 |
Issue: | 1 |
起始頁: | 246 |
結束頁: | 253 |
顯示於類別: | 期刊論文 |